Art of teeming glass.



F. L. 0. WADSWORTH.

ART OF TEBMING GLASS.

nrrmcuron rnmn JAH.13,190B.

921 ,923. Patented May 18, 1909.

2 SHEETS-SHEET 1.

WITNESSES INVENTOR F n JMZOW .7 M ATTYk s F. L. 0. WADSWORTH.

ART OF TEBMING GLASS.

APPLICATION FILED JAR. 13.1008.

921 ,923 Patented May 18, 1909.

2 SHEETS-SHEET 2.

WITNESSES NVENTOR ladies from the me t' receptacle from which t e glassis drawn to form the cylinder or sheet. Under the present practice theladle is held stationary, ,.except'a's regards its rotary movement, so

that as the-tapping progresses the stream of metal moves across. thereceptacle. It has 25. ing

article.

55 a part of this speci cation, Fi

are respectwely, a diagrammatic section and FRANK L. 0. WADSWORTH, OFSEWIGKLEY, PENNSYLVANIA.

83'! OF TEEXING GLASS.

a No. 921,923.

Tocll whom it may comm." Be it known that L'FRANI; L. Q. Wanewonrn,residing at Sewickle in the county of Allegheny and State ofennsylvania, a

5 citizen of the'United States, have invented or'discovered certain newand useful Improvements in the Art of Teeming Glass, of

which improvement the following is a speci fication. t

In one of the methods, of forming lass sheets the 'moltenj lass istransferre by tank or pot to the been found that the edges of the stream2ocool quite rapidly, and in the movement of the'ladle' in reversedirection to cut off the stream of glass, the latter is reduced involnine and moves back across the surface of the glass in the receptacletoward its startoint. 'The thinnin of'the stream so acce crates thecooling, t at lines ofchilled -glass are formed in t esurface of theglass in the receptacle and these lines a pear.

spread out, and magnified in the rawn And further in the present methodthe glass flows onward from the oint of pour in su rposed waves or foldsin which air is liabl e to .be can ht forming bubbles adjacent to thecenter 0 the ot from which position they cannot be read y, removed.

The invention described herein relates to animproved method of teeminthe glass into the receptacle from which it is to'be drawn, and consistsin causing the stream 40 of lass to-move continuously and progressive yfor itsfirst point of entrance into the receptacle. across the latterand beyond its edge, the. cutting off of the stream by re- 'versing therotation of the ladle, being effected outside of the periphery of thereceptacle. As the glass 'll'l my improved method advances ins singlewave or fold across the pot or,rece tacle, any air adhering to thesurface 0 the stream will be pushed along to the side of the receptacleand can be easily removed.

The invention'is hereinafter more fully described and claimed.

In the accompan ing drawings forming res l and 2 Specification ornate:-Patent. a lication filed-January 1:; mos. sortable. noses.

Patented Kay 18, 1909.

a plan illustrating the usual practice of teeming glass into drawingpots or stools;

Fig. 3 is a top plan view of a form. of apparatus adapted to the racticeof my invention; Fig. '4 1s a iagrammatic view showm successivehorizontal-positions of the la e' Fig. dis a sectional elevation showing-1e ladle in successive ti p and horizontal positions; Fi .'6 is a dhta'view showing a support for e ladle while teemmgz; Fig. 7 1s a sectional@detail showin a ca r h device forjthe tailings and Fig. is

a plan view showing the manner of remow i-ng bubbles or otherimperfections fromtho l a. a As. shown m Fig. 1 the ladle is held, underthe present tpractice stationary horizontally relative to e reoei streamof glass is also orizontall'y station- ,ary,.exce t for the backwardmovement of the lip o the la'dle as it is tip ed to pour and t ecorresponding forward movement as the turnin of the ladle is reversed tocut oif the flpw mm the ladle. The stream of glass flowing from theladle is the thinnest at its ed es and the (glass formin such ed es willcoo more rapi ly than thei glass in the ladle decreases the outflowingows thinner, and the edges alsobeconie t -nner, .thus facilitating theirchilling. When the rotation of the ladle is reversed to stop the flow ofthe stream, the stream is drawn to practically a string and chills very.rapidly. Durin this reduction in volume the lip of the la e is movingin ahorizontal direction toward the initial point of pour depositing thechilled threadsin converging lines on the surface of the glass as shownin Fig. 2. 'In drawing the glass these chilled threads ap ear in seriesof parallel lines in the finishe articles.

In the ractice of my invention, the ladle l in add' ion to the usualtipping movement is shifted continuously from the beginnin of thetipping in a substantially horizonta direction, so that the stream ofglass will move across the receptacle. It is referred that at thebeginning of the pour, t e stream should enter adjacent to the side walland move progressively andcontinuously across the receptacle and out ofthe same. The rate of movement of the stream should corres 0ndapproximately to the rate of flow which the glass would have if thestream was stationary and the glass flowed outreceptacle and the ody oft e stream. And further as the quantity of the wardly from a commoncenter. Byl starting the pour at one side and moving 1; e stream at therate stated, the receptacle will be filled by horizontally addedincrements rather than by the horizontal fiow from one point to another,as in the present practice. The

horizontal movement of the stream is c ntinued by the edge of thereceptacle and it is preferred that'there should not be any greatreduction in the volume of the stream until the latter has passedoutside of the receptacle. By this method of pouring, the

glass forming the edges of the stream andwhich may become somewhatchilled will beladle 6 is preferabclly provided with collars to preventthe ban le moving back and forth" on, thebracket. The latter portion ofthe charge in the ladle will flow into a pocket or recess 10 which iswithin the furnace and is covered except while the pot is being filled,by suitable means as a removable section 11 of the top stone of thefurnace, or the tailings from the ot maybe caught in a pan 12, which mayhe pivotally mounted on the furnace as shown in Fig. 7.

In the use of this apparatus, the ladle is swung over the pan and thendepressed into the osition shown in dotted lines in Fig. 7. As it isdropped pastthe edge of the pan, it strikes an arm 14 and tilts the paninto the position shown in dotted lines thereb automatically dischargingthe tailings bac into the ladle.

It is characteristic of my. improved method that the tailings from t epot which are the source of the ladle lines in the finished product,never enter the pot, but are discharged entirely outside of the Same.Also that any air bubbles or other similar defects which are trapped inthe glass durset my ing drawing pots, the method herein described whichconsists in causin the stream of glass to move rogressively a ong thereceiving vessel and beyond the edge thereof. 2. As an improvement inthe art Ofcharging drawing pots, the method herein described whichconsists'in starting the pouring operation within the receptacle andmaintaining theinfiow until the stream of metal is outside of the edgeofthe receptacle. j r i g 3. As an improvement in the art of chargingdrawing pots the method herein described, which consists in filling thesame by horizontally added increments of molten g ass.

4. As animprovement in the art of charging drawing pots, the'method,herein described, which consists in causing the stream of glass flowinginto the pot to move to and v beyond the edge of the pot.

As an improvement in the art of charging drawing pots, the method hereindescribed, which consists in commencing the inflow adjacent to one sideof the pot and causing the inflowing stream to move across and beyondthe edge of the pot.

6. In an apparatus for teeming metal, the

combination of a movable pan arranged adjacent to the receptacle intowhich the metal is to be teemed, and a movable ladle, the pan beingadapted to be shifted by theladle to discharge its contents intotheladle.

7. In an apparatus for teeming metal, thecombination of a pivotallymounted pan provided with a projecting arm and a movable ladle, saidparts being so arranged that the pan will be tipped by'the ladlestriking the arm and discharge its contents back into the ladle.

In testiniiony whereof, I, have hereunto han y i FRANK L. O. WADSWORTH.

Witnessesf JAS- W. DRAPE,

FaANoIs J. ToMAssoN.

